Rheostat



movable rod K, the divergingarmslvLattached to the said rod and insulated from each other, said arms being conductors of electricity and adapted to form part of an electric circuit, substantially as described.

3. The combination of the vessel A, to contain the chemical solution, the vertically-movable rod K, having thc rack-teeth, the revolnble shaft G, having the pinion engaging the rack-teeth, and the conducting-arms M, secured to the lower end of rod K, diverging outward to the sides of the vessel and adapted to form part of the electric circuit, for the purpose set forth, substantially as described.

4. The combination, in electric-light systems, of the conducting-wire in which the electric lamps are included, the vessel containing the chemical solution, and the diverging conducting-arms M, connected to the conducting-Wires, having their upper ends insulated from each other, and means to immerse the diverging lower ends of said arms into the chemicalsolution to any desired depth, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing as my own I have hereto atlixed my signature in presence of two witnesses.

FRANK. J'. CROUCH.

Witnesses:

Gno. A. DoRRIs, JOHN STRAUB. 

